Physical and Chemical Changes

Which statement is true of water in its liquid state of matter?

• It cannot be seen.

• It has definite shape and volume.

• It takes the shape of its container.

• It has a temperature below freezing.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How can liquid water be changed into a gas?

• by decaying

• by cooling

• by heating

• by rusting

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A scientist mixes two liquids together. The result is a new solid substance. Which of these is TRUE about this solid?

• The solid has the same state of matter as the two liquids.

• The solid was formed by a physical change, not a chemical change, in the two liquids.

• The solid can be separated back into the two liquids.

• The solid has different properties now compared to the two liquids.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these is a chemical change that happens when a piece of iron rusts?

• It begins to smell bad.

• It becomes brittle and easy to break.

• It gives off heat.

• It turns into a hard matter.

Tags

NGSS.MS-PS1-2

How are the solid and liquid states of water different? Check ALL that apply.

• They are made up of different molecules.

• The molecules are more spaced out and move around faster in liquid water than in solid water.

• One is an example of a physical change, and the other is an example of a chemical change.

• A solid will have a definite shape and volume, while a liquid only has a definite volume, taking the shape of its container.

Tags

NGSS.MS-PS1-4

Which of the following are examples of chemical changes? Check ALL that apply.

• Baking cookies

• A fish decaying

• Steel rusting on a car

• Water changing from a liquid to a gas

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following are examples of physical changes? Check ALL that apply.

• Water changing from a liquid to a solid.

• Tearing paper

• Burning paper

• Steam forming

Tags

NGSS.MS-PS1-4

What is a physical change?

• when matter changes to look different, but does not become a new type of matter

• a change in which new substances are formed

Tags

NGSS.MS-PS1-2

What is a chemical change?

• a change in which new substances are formed

• when matter changes to look different, but does not become a new kind of matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5